The area where I live has multiple “galleries”, which are covered pedestrian roads. On OSM, these are marked as pedestrian paths with the building_passage tag.
Here’s a (fairly well known) example of such a gallery: on OSM and in streetview.
It is quite hard to get a decent GPS signal inside these tunnels. Furthermore, these tunnels are often used as a passage for commuters or as a shopping mall. Therefore, I’d argue it might be a good idea to avoid adding nodes to streets marked as building_passage in OSM. This change will hopefully not affect regular pedestrian paths with a short underground section, as nodes would still be present on the above-ground parts of these paths.
According to OSM wiki, these building_passage roads don’t count as indoor (they’re meant to pass below the building, without actually entering the building).
I’m not 100% sure what the most appropriate solution is here. Either the items are mislabeled on OSM (for the second example I linked, arguments could be made for both indoor and building_passage), in which case they should be fixed there. Or they are excluded from citystrides, as I proposed.
I think it depends. If every building_passage path is similar to the ones I linked above, I think it makes sense to exclude these from citystrides. If the building_passage paths near me just happen to be exceptional cases I agree that marking them manually is a better option.
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